diff --git a/README.md b/README.md
index 1a52ce08..e87e396e 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@ fun example(jar: JarFile, `package`: Package) {
         }
     }
     // save all changes to methods back to jar
-    updateJar(cm, jar, `package`)
+    jar.update(cm, `package`)
 }
 ```